TABLE 7.

Nottingham prognostic index (NPI) (7).

*No lymph nodes involved	1
1–3 lymph nodes involved	2
>3 lymph nodes involved	3
Prognostic groups based on NPI value
Excellent prognostic group (EPG)	2–2.4
Good prognostic group (GPG)	2.41–3.4
Moderate prognostic group I (MPG-I)	3.41–4.4
Moderate prognostic group II (MPG-II)	4.41–5.4
Poor prognostic group (PPG)	5.41–6.4
Very poor prognostic group (VPPG)	> 6.41

Tumour size (cm) × 0.2 + lymph node score (according to lymph node involvement, score: 1–3*) + grade score (grade I–score 1, grade II—score 2, grade III—score 3).